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Volvo P0044 code - 1999 Volvo S70

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What is a fuel trim bank 1 on a 2006 xc90 volvo an whatvis a evap emission system switching valve mean


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    I have a daewoo cielo 1996 model. My car is giving out black smoke from the exhaust and it smells like rich mixture.(more of petrol less of air) The onboard diagnostic shows code 13 and 44. where could the...


    Make the FixYa experience better for everyone by voting.

    Hi,

    The Code 13 refers to the camshaft position sensor and should be fixed ASAP since it can cause the engine to shut down without warning, You can replace the unit in under thirty minutes. Plan on paying about $50 for the part on eBay or Amazon.

    The replacement should clear up the P0044 HO2S Heater Control Circuit High (Bank 1 Sensor 3) reading.

    All the best,

    Ben

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    P0044 - HO2S Heater Control Circuit High (Bank 1 Sensor 3)

    The P0044 is set when the ECM detects an excessively high voltage through the heated oxygen sensor heater circuit

    Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).

    In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.

    Symptoms
    - Engine Light ON (or Service Engine Soon Warning Light)

    Possible causes
    - Heated Oxygen Sensor (H2OS) Bank 1 Sensor 3 circuit open shorted to ground
    - Heated Oxygen Sensor (H2OS) Bank 1 Sensor 3 circuit poor electrical connection
    - Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 3 circuit
    - Heated Oxygen Sensor (H2OS) Bank 1 Sensor 3 circuit fuse
    - Faulty Engine Control Module (ECM)

    The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.

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    Hope helps (remember to rate this answer).

    Mar 15, 2011 | 2004 Toyota Camry

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    Hi

    The codes are P0019 Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor B) &
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    Regards Dan

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